Poultry USA - May 2019 - 51

WATTPoultryUSA

infection in commercial flocks; however, these studies
were unable to determine whether Campylobacter
benefited from poor broiler gut health, of whether the
bacteria caused it.

Slow- and fast-growing bird divergence
C. jejuni has been found to affect fast- and slowgrowing breeds differently.
Studies comparing C. jejuni in fast- and slow-growing
chickens have found that fast-growing chickens had severe
diarrhea, whereas slow-growing birds did not. With fastgrowing birds, there was much damage to the gut mucosa,
particularly in the ileum, while in slow-growing birds, with
normal feces, the villi were found to be less affected.
Preliminary analyses of innate responses showed
that gut damage in fast-growing broilers was associated with dysregulation of pro-inflammatory cytokines.
However, work by another group, using fastgrowing birds with a different strain of C. jejuni, found
similar damage to the ileal mucosa, but did not report
diarrhea. Other studies have also found damage to the
gut mucosa, but not all.
A variety of impacts have been found resulting from
infection with C. jejuni. For example, some studies have
found that infection in young birds with C. jejuni was lethal,
and this has also been found in turkey and ostrich chicks.

Damage to the gut mucosa and diarrhea will not only
affect nutrition, but the former will also contribute to
the spread of Campylobacter to edible tissue, and there
is long-standing and mounting evidence that the major
health threat from Campylobacter-positive chickens is
not from surface contamination -- edible tissue are also
positive, almost exclusively with C. jejuni.
Contamination of chicken muscle is a public
health threat that seems to be increasing, yet this is
not fully understood.

CAMPYLOBACTER IS NOT AN
entirely commensal bacteria.
Impact on gut health
Claudia Hess, of the Clinic for Poultry and Fish
Medicine at the University of Veterinary Medicine
(Vetmeduni) in Austria, looked at work carried out
by Vetmeduni in collaboration with other universities
that examined the interaction by C. jejuni with the gut
barrier in broiler chickens.
Hess said this project has also found that
Campylobacter is not an entirely commensal bacteria
and that it can be seen as an important contributor to

Contamination of edible tissue with Campylobacter is an increasing public threat. Elena Shashkina | BigStock.com
May 2019 ❙ www.WATTAgNet.com

❙ 51


http://www.BigStock.com http://www.WATTAgNet.com

Poultry USA - May 2019

Table of Contents for the Digital Edition of Poultry USA - May 2019

Poultry USA - May 2019
Contents
It’s time to consider new poultry transport trailers
Poultry transparency: Two tales, same passion
Salmonella Reading outbreak challenges turkey industry
5 keys for controlling Salmonella on breeder farms
Salmonella prevention requires integrated approach
How to protect turkey flocks from heat stress
A new device for detecting woody breast
Where will chicken belong in the diet of the future?
12 feed antibiotic reduction lessons from EU producers
Is it time to rethink Campylobacter and broiler health?
Product Review
Market Place
Ad Index
Poultry USA - May 2019 - CT1
Poultry USA - May 2019 - CT2
Poultry USA - May 2019 - Poultry USA - May 2019
Poultry USA - May 2019 - Cover2
Poultry USA - May 2019 - CT3
Poultry USA - May 2019 - CT4
Poultry USA - May 2019 - Contents
Poultry USA - May 2019 - It’s time to consider new poultry transport trailers
Poultry USA - May 2019 - 3
Poultry USA - May 2019 - 4
Poultry USA - May 2019 - 5
Poultry USA - May 2019 - Poultry transparency: Two tales, same passion
Poultry USA - May 2019 - 7
Poultry USA - May 2019 - 8
Poultry USA - May 2019 - 9
Poultry USA - May 2019 - 10
Poultry USA - May 2019 - 11
Poultry USA - May 2019 - Salmonella Reading outbreak challenges turkey industry
Poultry USA - May 2019 - 13
Poultry USA - May 2019 - 14
Poultry USA - May 2019 - 15
Poultry USA - May 2019 - 5 keys for controlling Salmonella on breeder farms
Poultry USA - May 2019 - 17
Poultry USA - May 2019 - 18
Poultry USA - May 2019 - 19
Poultry USA - May 2019 - Salmonella prevention requires integrated approach
Poultry USA - May 2019 - 21
Poultry USA - May 2019 - How to protect turkey flocks from heat stress
Poultry USA - May 2019 - 23
Poultry USA - May 2019 - 24
Poultry USA - May 2019 - 25
Poultry USA - May 2019 - A new device for detecting woody breast
Poultry USA - May 2019 - 27
Poultry USA - May 2019 - 28
Poultry USA - May 2019 - 29
Poultry USA - May 2019 - 30
Poultry USA - May 2019 - 31
Poultry USA - May 2019 - 32
Poultry USA - May 2019 - 33
Poultry USA - May 2019 - 34
Poultry USA - May 2019 - 35
Poultry USA - May 2019 - 36
Poultry USA - May 2019 - 37
Poultry USA - May 2019 - 38
Poultry USA - May 2019 - 39
Poultry USA - May 2019 - 40
Poultry USA - May 2019 - 41
Poultry USA - May 2019 - 42
Poultry USA - May 2019 - 43
Poultry USA - May 2019 - Where will chicken belong in the diet of the future?
Poultry USA - May 2019 - 45
Poultry USA - May 2019 - 12 feed antibiotic reduction lessons from EU producers
Poultry USA - May 2019 - 47
Poultry USA - May 2019 - 48
Poultry USA - May 2019 - 49
Poultry USA - May 2019 - Is it time to rethink Campylobacter and broiler health?
Poultry USA - May 2019 - 51
Poultry USA - May 2019 - 52
Poultry USA - May 2019 - 53
Poultry USA - May 2019 - Product Review
Poultry USA - May 2019 - Market Place
Poultry USA - May 2019 - Ad Index
Poultry USA - May 2019 - Cover3
Poultry USA - May 2019 - Cover4
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